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(No Model.)

0. EfDURYEA. PEDAL FOR BIGYGLES.

Patented July 15, 1890,

UNITED STATES PATENT OFFICE.

CHARLES E. DURYEA, OF \VASI-IINGTON, DISTRICT OF COLUMBIA, ASSIGNOR, BYDIRECT AND MESNE ASSIGNMENTS, TO THE ROUSE-DURYEA CYCLE COMPANY, OFPEORIA, ILLINOIS.

PEDAL FOR BICYCLES.

SPECIFICATION forming part of Letters Patent No. 432,126, dated July 15,1890. Application filed December 12, 1889. Serial l No. 383,396. (Nomodel.)

To aZZ whom, it may concern:

Be it known that 1, CHARLES E. DURYEA, a citizen of the United States,residing at \Vashington, in the District of Columbia, have inventedcertain new and useful Improvements in Pedals for Bicycles; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to certain new and useful improvements in pedalsfor operating the cranks of bicycles and other vehicles. One of itsobjects is to furnish a, rat-trap atr 5 tachment to be applied to thefoot-piece to prevent the foot from slipping while actuatin g the pedalat a high speed, and at the same time furnish the requisite elasticityto the foot-piece.

A further object is to furnish a pedal which which can be used either asa plain pedal or as a rat-trap pedal at the will of the rider, theconstruction of the rat-trap attachment being such that it can bereadily and easily applied 2 5 to and removed from the foot-piece.

A further object of the invention is to reduce the number of parts to aminimum, thereby avoiding the liability of the parts to become loose andrattle.

To these ends my invention consists of cer tain details of constructionand combinations of parts to be more fully set forth, and pointed out inthe ensuing specification and claims.

In the accompanying drawings, Figure 1 3 5 represents a plan view of myimproved pedal applied to the crank-arm of a bicycle. Fig. 2 is an endelevation of the same. Fig. 3 is a section of the same on the line a- 00of Fig. 1. Fig. 4 is a perspective of the rat-trap attach- 0 mentdetached. Fig. 5 is a modified form of my improvement.

The same letters of reference indicate identical parts in all thefigures.

In the drawings, A indicates the crank-arm of the bicycle; B, thecrank-pin; C, the footpiece or frame of the pedal, and D the rattrapattachment. The frame C is provided with two bearingsurfaccs, usual, oneeach side tr the crank-pin B, andis formed of a single piece of sheetmetal bent into U form, each arm of the U being provided on its oppositeedge with outturned flanges c c, which form obtuse angles to the frameC, as shown in Fig. 2, to serve as the hearing or contact surface forthe foot. The extremities of the arms C Care riveted or otherwisesecured to arms 6 e of a u shaped end plate E. At the middle point ofthe frame C of the foot-support is provided an inwardly-projectingdepression f, having a central opening adapted to receive the outer orsmall end of the crankpin B, the concavity of said depression f formingone half of aball-race f, the other half being formed by asimilarly-shaped closed cap f riveted or otherwise secured thereto. Asimilar ball-bearingis formed for the other or large end of thecrank-pin by the depressions e 6 respectively, in the end plate E andcap E The latter ball-bearing is adjustable by means of aninternally-screw-threaded collar F on the screw-threaded end of thecrank-pin, the periphery of said collar being turned down to form theinner track for the balls to run on. A jam-nut or screw-threaded collarG is fitted 011 the crank-pin in order to retain the conical 7 5 adjListing-collar F in place after it has been adjusted to its properplace. Two washers g g are placed on the end of the crank-pin B, betweenwhich the crankarm A is clamped in the usual manner by the usualclamping-nut, the inner side of the washer g being adapted to bearagainst the contracted end of the conical collar-F. When it is desiredto adjust the said bearings, it is only necessary to loosen theclamping-nut and janrnnt G, adjust the conical collar F, and again screwthe clamping and jam nuts home. The pin 13 is flattened at 1), where itpasses through the slot in the crank-arm A, to prevent the pin fromturning when the 0 conical collar is adjusted.

The flanges which form the contact-surfaces or foot-support of thefoot-piece are perforated by the openings 0' c, and between theseflanges I secure the rat-trap attachment 1), 5 the teeth thereofprojecting through the perforations. This rat-trap consists of a singlepiece ofspringsheet metal, of less length than the flanges c and ofgreater width than the distance between the said flanges, bentlonginally into U form, with its edges slightly turned outward, andprovided at intervals on ts edges with teeth, so that when the rat-trap1s placed in position between the flanges the teeth will project throughthe perforations, wlnle the plain edges will bear against the metalbetween said perforations. In the draw- 1ngs I have shown the toothededges of the rat-trap slightly curving, so as to pass through the centerof the perforations, and thereby give a greater bearing on the sole ofthe shoe; but this not necessary, as said edges may be 1n a straightline, if preferred. It will be observed that by constructing therat-trap in the form of a U-shaped spring and allowing the teeth toproject only a short distance beyond the plane of the foot-support thespring Wlll yield undera certain pressure, and thereby prevent the teethfrom entering the sole of the shoe and tearing the same, as is often thecase in the ordinary rat-trap pedal, and at the same time it willprevent the shoe from slipping when riding at a high speed. WVhile Ihave shown and described the rattrap D as composed of a single spring,it is evident that two or more short springs may be used withoutdeparting from the principle of my invention.

If found more desirable, the rat-trap may be omitted and thefoot-support used as plain contact-surfaces. The flanges c 0, beinginclined inwardly toward the center of the crank-pin, conform to thecurvature of the sole of the shoe, so that the shoe will not easily sliptherefrom, or the foot-supports may be covered with a thin sheet ortubing of rubber or other frictional material, as shown in full lines onthe right-hand side of Fig. 2and in dotted lines in Fig. 1. In somecases I may bend the flanges c c in the form of a tube, as shown indotted lines on the left-hand side of Fig. 3, and the same may becovered with rubher, if desired.

In Fig. 2 I have shown a modification of my invention, in which the bodyportion of the foot-piece is formed of a single piece. The extremitiesof the arms of the U instead of terminating close to the flanges c c areextended somewhat beyond said flanges, and are turned inward at rightangles to the frame, so as to overlap each other, the overlapping endsbeing connected together by means of rivets or otherwise and providedwith the ball-races similar to the plates E E.

The advantages of my invention will be readily appreciated bybicyclists, as it is almost instantly convertible from a rat-trap pedalto a plain pedal, and vice versa, and when used as a rat-trap pedal theteeth are prevented from entering the sole of the shoe far enough toinjure the same, by reason of the elasticity of the U-shapedconstruction.

In some cases I may construct the flanges separate from the body portionC,and secure the same thereto by means of rivets or otherwise.

Among the incidental advantages of my invention may be mentioned that itcombines lightness with strength, is neat in appearance, thefoot-supports never roll, as is the case with ordinary pedals, and isfree from oil and dirt, which collect at the outer end of most pedalsand'are continually soiling the clothes.

Having described my invention, what I claim, and desire to secure byLetters Patent, is

1. A bicycle-pedal consisting of a piece or pieces of stamped sheetmetal bent to form the ends and sides of the frame,with bearings in theends,and having outturned flanges on the sides forming foot-supports,substantially as and for the purposes described.

2. A bicycle-pedal frame, the ends and sides of which are formed of asingle piece of sheet metal having outturned side flanges forming footrests or supports, substantially as and for the purposes described.

3. In a pedal for bicycles and similar vehicles, the combination, withthe pedal-frame having outturned perforated flanges, of a rat-trapattachment interposed between the flanges each side of the crank-pin,substantially as and for the purposes described.

4. In a pedal for bicycles and similar vehicles, the combination, withthe pedal-frame provided at its opposite edges with outturned perforatedflanges, of a spring rat-trap attachment removablysecured between saidflanges, substantially as and for the purposes described.

5. In a pedal for bicycles and similar vehicles, the combination, with apedal-frame having outturned perforated flanges, of a rattrap attachmentremovably secured between said flanges, said attachment consisting of aspring-metal plate provided on its edges with teeth adapted to projectthrough the perforations in said flanges, substantially as and for thepurposes described.

6. In a bicycle-pedal, the combination, with a rigid shell orfoot-support, of a serrated rattrap attachment adapted to recede into orbelow the foot-support upon excessive pressure, substantially as and forthe purposes described.

7. In abicycle-pedal, the combination, with the end plates, of outturnedside flanges forming foot-supports, and rubberor other frictioncoverings secured to said flanges, substantially as and for the purposesdescribed.

8. In a pedal for velocipedes, the combination, with the pedal-framehaving outturned side flanges forming foot-supports, of a removablerubber or other friction covering encircling said flanges, substantiallyas and for the purposes described.

9. In a pedal for velocipedes, the combination, with the frame of thepedal, of ball-races formed in the ends thereof, a pedal-pin having aball-race at one end and a screw-thread clamping-nut, and caps forcovering said ball- IO at the other, a conical collar screwedon saidraces, substantially as and for the purposes pin, a collar adapted tobear against said described.

conical collar, and a clamping-nut, substan- In testimony whereof Iaffix my signature in tially as and for the purposes described. presenceof two Witnesses.

10. In a pedal for velocipedes, the combi- CHARLES E. DURYEA. nation,with the pedal-frame having openings \Vitnesses: in its ends, aball-race formed around said E. T. \VALKER,

openings, an adjustable cone on said pin, a CHARLES S. DRURY.

